English expressions

Okay guys, I need help to know what those expressions mean, cause I've got an English test tommorow, and it's an important one, it's vocabulary one.

Pristine:
Linger:
Prized:
To result from:
Start-up:
Immerse oneself:
Deadend:
Unscrupulous:
Crow's feet:

I need answers and quick, I know these are simple but English is not my main language and I suck at it.

England to the rescue!!!

Pristine: Perfect condition.
Linger: Hang around, maybe after an event.
Prized: like treasured. 'Prized possesion'
Immerse oneself: Like, to get relly into something. 'And then I immersed myself into a really good book'.
Unscrupulous; Underhand, sneaky, illegal.

Try dictionary.com or something similar for more help .

I've got some more for you guys sorry, them keep popping-up. I don't trust sites also. And thanks.

Hub:
Prized:
To result from:
Start-up:
Crow's feet:

This is the American version haha

Pristine - Remaining in a pure state; uncorrupted by civilization.
Linger - To be slow in leaving, especially out of reluctance; tarry. To stay around.
Prized - A prize is something very valuable, often won for being first in a competition, something PRIZED is usually something that someone feels very strong feelings for. A PRIZED possesion.
To result from - usually means the outcome of an event. like the result of the actions were this.
Start-up - to begin, to irritate. Go start-up the car. or Don't keep asking me, I told you not to start me up. etc.
Immerse oneself - immerse means to completely be covered by a liquid. oneself is like you or one person doing something to themselves. so it would be someone completely covering themself in a liquid.
Deadend - usually seen while driving meaning the road has no outlets and you need to turn around. A deadend is when you're stuck and you have nowhere to go and need to go back.
Unscrupulous - Devoid of scruples; oblivious to or contemptuous of what is right or honorable
Crow's feet - usually intended to point out the first wrinkles developing in a womans face usually under the eyes

Start-up: To start something. "Go start up the car. I'll be right out."

And by the way, it's dead end.

lol, you and your next day exams and tests, I remember your art topic...
May have already got it but I wanna help
Prize:Something awarded to you for donig something else, say if you entered a competition you may win the prize, is often something useful

What does the word "However" mean?
Maybe a stupid question.
My own language isn't english.

You, however, type well enough.

There. It's used in a sentence. It basically means "but.".

Thanks, Now that I know that, I'll use it from now on in every post. Or at least, I'll try.